Ghent University is offering a fully funded PhD position in the Department of Environment, focusing on the biological degradation of fossil fuel based microplastics in soil. This multidisciplinary project, supported by the Research Foundation - Flanders (FWO), addresses the urgent issue of microplastic pollution in the Anthropocene era, with soils acting as the largest reservoir and transfer medium for microplastics to other ecosystem compartments. The research aims to develop innovative methodologies for extracting and analyzing microplastics from soils, combining established soil organic matter research techniques with advanced microscopic visualization. The project will investigate the redistribution of microplastics within the soil matrix during aggregate formation and destruction, and assess the risk of microplastic transfer from soil to groundwater, which is critical for drinking water safety. The core focus of the PhD will be on the biological degradation of microplastics in soil environments, utilizing custom-made 13C labelled polymer microplastics to monitor degradation processes and standards. The project will also employ state-of-the-art molecular techniques to track soil microbial consortia responsible for microplastic degradation. The research is highly relevant for soil and human health, sustainable agriculture, and ecosystem functioning. The successful candidate will work within a consortium of leading research groups at Ghent University: the Research Group Soil Fertility and Nutrient Management (Prof. Stefaan De Neve, Prof. Steven Sleutel), Micro2Soil Laboratory (Prof. Caroline De Tender), and the NanoBioTechnology research group (Prof. Andre Skirtach). Collaboration with two other PhD students in the field is expected. Applicants should hold an MSc in Bioscience engineering, biochemistry and biotechnology, or a related field, and demonstrate a strong interest in multidisciplinary research on microplastic pollution in soils. Good knowledge of soil science and proficiency in English are required. The position offers a stimulating, international research environment, personal development opportunities through doctoral schools, and a competitive fellowship package including salary, tax-free grant, and staff benefits. Applications are open until 11 November 2025, with an expected start date of 1 December 2025 (negotiable).